Background and activities

High Temperature Heat Pumps

Hybrid Heat Pumps

Ammonia-water absoprtion/compression cycles

Scientific, academic and artistic work

Journal publications

Part of book/report

  • Ahrens, Marcel Ulrich; Ertesvåg, Ivar Ståle; Eikevik, Trygve Magne. (2020) Exergy analysis of combined absorption-compression heat pump with ammonia-water mixture as working fluid. Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
  • Verpe, Espen Halvorsen; Schlemminger, Christian; Bantle, Michael; Ahrens, Marcel Ulrich. (2020) Experimental evaluation of a water based high temperature heat pump with novel high pressure lift turbo compressors. Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
  • Ahrens, Marcel Ulrich; Hafner, Armin; Eikevik, Trygve Magne. (2019) Development of Ammonia-Water Hybrid Absorption- Compression Heat Pumps. Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
  • Ahrens, Marcel Ulrich; Hafner, Armin; Eikevik, Trygve Magne. (2019) Compressors for ammonia-water hybrid absorption-compression heat pumps. 8th Conference on Ammonia and CO2 Refrigeration Technologies, Proceedings.
  • Bantle, Michael; Schlemminger, Christian; Gabrielii, Cecilia H; Ahrens, Marcel Ulrich. (2019) Turbo-compressors for R-718: Experimental evaluation of a two-stage steam compression cycle. Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
  • Bantle, Michael; Schlemminger, Christian; Ahrens, Marcel Ulrich; Evenmo, Kjetil. (2018) Kennfeld und Leistungsanalyse einer zweistufigen Turbokompressor-Brüdenverdichtung. DKV-Tagungsbericht 2018 Aachen, 21. – 23. November 2018.
  • Bantle, Michael; Schlemminger, Christian; Tolstorebrov, Ignat; Ahrens, Marcel Ulrich; Evenmo, Kjetil. (2018) Performance evaluation of two-stage mechanical vapour recompression with turbo-compressors. Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.

Report/dissertation